exim pipe - handling errors silently?

I'm trying to avoid exim bouncing back PHP error messages from the pipe

This happens regardless if I try to force it to exit(0) or turn off error_reporting(0)

I noticed the exim "ignore_status" option which I guess is one way of dealing with it, but is there a better way on a "per pipe" basis perhaps? Can something be done on the pipe command line?

Exim Specification - 18. The pipe transport

I suspect "ignore_status" might be a bad idea across an entire server especially if error messages are needed by cpanel, etc. for other reasons.